12mm Diffused Thin Digital RGB LED Pixels
(Strand of 25) - WS2801
PRODUT ID: 322
Description
RGB Pixels are digitally-controllable lights you can set to any color, or animate. Each RGB LED and
controller chip is molded into a 'dot' of silicone. The dots are weatherproof and rugged. There are four
flanges molded in so that you can 'push' them into a 12mm drill hole in any material up to 1.5mm/0.06"
thick. They're typically used to make outdoor signs. We also have flat-backed pixels that are essentially the
same, but are not as long and thin.
The pixels are connected by a 4-conductor cable. +5V (Red), Ground (Blue), Data (Yellow) and Clock
(Green). Data is shifted down from one pixel to the next so that you can easily cut the strand or attach more
onto the end. Each dot is digitally controlled, with an internal 8-bit PWM LED driver (24-bit color for 16
million different shades). The pixels must be clocked by a microcontroller, we have an example code
linked below that works on an Arduino, it should be simple to adapt it to any other microcontroller.
The pixels use 8mm diffused RGB LEDs, with a 120 degree beam width. The total max brightness of all
LEDs is about 1600mcd but with the light more evenly distributed & mixed than a clear LED. (Please note:
mcd ratings of LEDs are notoriously inflated by most LED sellers, so be extra-skeptical when reviewing
LED ratings!)
Sold by the strand, each strand has 25 pixels in series! Each strand has two JST SM 4-pin connectors so
you can connect multiple strands in a row, as many as you wish, just watch for how much current they
want. We now have LED pixel strands with the power wires (red & blue) spliced out so its really easy to
connect 5VDC in using a 2.1mm jack terminal adapter. We have a 5V/2A supply that should be able to
drive 2 or more strands and a 5V/10A supply that can drive up to 160 LEDs all lit up at once
If you want to connect to the strand (to wire it to power and a microcontroller), you could cut and solder to
the wires, but better yet just grab a 4-JST cable set - then check the LED modules to see which way is the
input (there's arrows showing the data direction)
You can drive these with an Arduino using any two microcontroller digital pins, check this library which
also has example code to demonstrate the strands and be sure to read our very detailed tutorial on
usage! https://github.com/adafruit/Adafruit-WS2801-Library http://www.ladyada.net/products/rgbledpixel/
Technical Details
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12mm diameter (0.45") 38mm deep (1.5")
80mm / 3" apart on the strand
25 pieces per strand
New! These pixels use a WS2801 chip for full 24 bit color
5V power, 60mA maximum per pixel (LED on full white)
2-pin SPI-like protocol
WS2801 Datasheet for the chip inside each pixel https://cdn-shop.adafruit.com/datasheets/WS2801.pdf
Brightness: Red = 3.3 Lumens/300 mcd, Green = 10 Lumens/1000 mcd, Blue = 2.7 Lumens/300
mcd (mcd calculation based on full 120 degree beam)
Engineered in NYC Adafruit ® https://www.adafruit.com/product/322 5‐5‐17
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